Steam boiler



Jan. 5, 1932. KILBURY 1,840,235

STEAM BOILER Filed July 7, 1930 gwoemtoo JD.Ki1.Bu1 a]- Patented Jan. 5,1932 UNITED STATES PATENT OFFICE PAUL DULUTH KILBURY, F NEWTON, IOWA,ASSIGNOR OF ONE-HALF TO JOHN W. BILLINGSLEY, OF NEWTON, IOWA STEAMBOILER Application filed July 7,

The principal object of my invention is to provide a low pressure steamboiler for use with oil burners.

A further object of this invention is to provide a steam boiler that iscapable of producing a maximum amount of steam in a minimum length oftime, with a minimum amount of used fuel.

A still further object of my invention is to produce anefiicient steamboiler of few parts.

A still further object of this invention is to provide a novel steamboiler for use with oil burners that is economical in manufacture anddurable in use.

A still further object of my invention is to provide a steam boiler thatis capable of producing a great amount of steam without occupying alarge space.

These and other objects'will be apparent to those skilled in the art.

My invention consists in the construction, arrangement and'combinationof the various parts of the device, whereby the objects contemplated areattained as hereinafter more fully set forth, pointed out in my claimsand illustrated in the accompanying drawings, in which:

Fig. 1 is a side sectional view of my complete invention.

Fig. 2 is a cross sectional view of my steam boiler taken on line 2-2 ofFig. 1 and more fully illustrates its interior construction. I

Fig. 3 is a cross sectional view of my device taken on line 33 of Fig. 1and illustrates the position of the steam dome in the steam boilerhousing.

Steam boilers have been used for a great number of years, but they arenot efiicient and much of the heat produced to transfrom the water intosteam passes out of the smoke stack unutilized. This is especially sowhen an oil burner is used as the heating agent and although my steamboiler may use other heating agents than oil burners, it is particularlyadapted for the use of oil burnersas will hereinafter be appreciated.

I have used the numeral to designate the housing having its side wall ofa continuous circular construction. In the upper portion of the side ofthe housing 10 .is an outlet port 11 designed to be in communicationwith the outside atmosphere by means of a pipe, chimney or like notshown. I have designated the main combustion chamber by the numeral 12located in the center of the lower half of the housing 10 and spacedapart from the bottom of the housing 10 as shown in Fig. 1. The numeral13 desigso nates a comparatively large horizontal inclosed passagewayhaving one end communicating with the inside of the combustion chamber12 and its other end communicating with the outside atmosphere o5through the side of the housing 10. The outer end of this largepassageway 13 is inclosed by the usual furnace door 14 and it is throughthis door 14: and the passageway 13 that an oil burner or like (notshown) in jects the fire into the combustion chamber 12.

The upper end of the combustion chamber 12 communicates with a secondchamber 15 having a diameter greater than the diameter of the combustionchamber 12 but a diameter less than the inside diameter of the circularhousing 10. This chamber 15 has above it a chamber 16 which is of thesame diameter as the circular housing 10 due to the fact that the upperportion of the housing so 10 forms the chamber 16. The upper open end ofthe chamber 15 is prevented from communicating with the chamber 16 bythe steam tank dome 17 resting on the bottom or plate 18 of the chamber16. This tank 17 5 has a diameter slightly larger than the diameter ofthe chamber 15 and less than the inside diameter of the housing 10 asshown in Fig. 1. Also it will be noted that the tank 17 is of lessheight than the height of the chamber 16, thereby providing a spacebetween the top of the tank 17 and the top of the housing 10. To insureno communication between the chamber 15 and the chamber 16 a gasket 19is placed on the plate 18 around the marginal edge of the chamber 15 andunder the tank 17. The numeral 20 designates the bottom circular plateof the chamber 15 which encircles the upper marginal edge of the chamber12. The numeral 21 desloo ignates a disk plate in the lower end portionof the housing 10 for forming a compartment 22 in the bottom of thehousing 10. This disk plate 21 is spaced apart from the bottom of thechamber 12 and a considerable distance from the extreme bottom of thehousing 10. The numeral 23 designates a plurality ofair liues havingtheir upper ends communicating with theinside of the chamber 15 throughthe plate 20, and their lower ends communieating with the inside of thecompartment 22 through the disk plate 21.

The numeral 24 also designates air flues' in the housing. but which havetheir lower ends/communicating with the inside of the compartment 22through the disk plate 21, and their upper ends communicating with thechamber '16 through the circular plate 18,. By this arrangement a. spacewill exist in-tthe housing 10 around the air fines 23 and 24. This spacewill also'exist between the bottom of the chamber 12 and the plate 21,around the passageway13, above the plate 21, under the plate 20, aroundthe side wall of the chamber 15, and under the plate 18.

We may term this confined space as a water jacket around the designatedparts. i

This'above referred to'space is in communication with the inside of thetank 17 by L-pipe connections 25 having one end communicating with theinside otthe tank 17 and their other end with the underside of the plate18 as shown in the drawings. These: Lconnections maybe secured to thetank 17 and plate 18 by any suitable means such as bolts or the like.The lines 23 may be secured to the plate 21 and plate 20 byany suitablemeans such as welding, threaded nuts on each end of the flues or like.The flues24 may be secured in the same inanneras the fines 23. Thenumeral '26 designates an inlet port in the side of the housing10.communicating with the space between the bottom of the combustion Ichamber12 and the plate 21. The numeral 27; designates an outlet portcommunicating with the lower portion of the tank 17. The numeral 28designates an outlet steam pipe communicating with the top of the steamdome tank 17. r

I have used the numeral 29 to designate a coil of pipe inxthecompartment 22 and hav- .ing both; ends leading from the housing 10.

This coil of pipe is for heating hot water for desirable purposes and isaccomplished From the combustion chamber 12 they heat will rise into thechamber 15 and not only contact the water surroundingthe chamber 15 butwill make direct contact with the bottom of the steam tank dome 17,thereby heating the water inside the same to a high temperature. Fromthe chamber 15 the heat Will go downwardly throu h the fiues 23; therebyheating the water around the fines 23 and will enter the compartment 22.Inside the compartment 22, the remaining heat will contact with the coilof pipe 29 and the bottom of the plate 21, thereby warming or heatingthe water adjacent the plate 21.

vFrom the compartment 22 the remaining heat will pass upwardly throughthe fines 24 into the chamber 16, thereby heating the water surroundingthe fines 24. From the chamber 16 the remaining heat will pass fromaround the tank 17 and then out through the port or outlet opening 11.

By this construction very little heat, it any, will be passing out ofthe port 11 as most of the heat units will be absorbed by the watersurroundingthe' fiues, chambers and in the tank 17 Some changes may bemade in the construction and arrangement of my improved steam boilerwithout departing from the real spirit and purpose of my invention, andit is my intention to cover my claims any modified forms of structure oruse of mechanical equivalents which may be reasonably included withintheir scope.

I claim:

1. In a device of the class described, a housing, a combustion chamberin said housing, an individual detachable tank in said housing closingthe top oi said combustion chamber and having a diameter less than thediameter of said housing, a water jacket around said combustion chamber,and pipes in said water acket each having one end operativelycommunicating with said combustion chamber and their other endcommunieating with the space between said tank and said housing forpermitting hot air from said combustion chamber to pass from saidcombustion chamber, through the water in said water jacket and intothe'spa'ce around said tank.

2. In a device of the class described, a housing, a combustion chamberin said housing, a second chamber above said first mentioned chamber andcommunicating with the same, a water jacket around the sides of said twochambers, a detachable tank in said housing entirely spaced apart fromsaid housing and inclosing the top of said sec ond chamber,fluesextending through said water acket each having one endcommunieating with said second chamber, and fines returning through saidwater jacket each having one end communicating with the otherend of saidfirst mentioned flues and 7 a diameter less than the diameter of saidhousing providing a compartment around the entire sides and top of saidtank, a water jacket around said chambers communicating with said tank,and hot air flues passing through said water jacket having one end inoperative communication with the inside of said second chamber and theirother end in direct communication with the compartment around said tank,

4:. In a device of the class described, a housing, a combustion chamberin said housing, a second chamber communicating with the top of saidfirst mentioned combustion chamber, a detachable tank above said lastmentioned chamber, in said housing and having a diameter less than thediameter of said housing providing a compartment around the sides andtop of said tank; said tank com pletely closing the entire top of saidchamber, a water jacket around said chamber communicating with saidtank, a compartment in the bottom of said housing, a plurality of fiuesextending through said water jacket each having one end communicatingwith the inside of said second chamber, and their other endcommunicating with the inside of the compartment in the bottom ofsaidhousing, and a plurality of flues passing through said water jacketeach having one end communicating with the inside of said compartment inthe lower end of said housing and their other end communicating with thecompartment around said tank.

5. In a device of the class described, a housing, a combustion chamberin said housing, a second chamber communicating with the top of saidfirst mentioned combustion chamber, a tank above said last mentionedchamber completely closing the entire top of said chamber, in saidhousing and having a diameter less than the diameter of said housingproviding a compartment around the sides and top of said tank, a waterjacket around said chambers communicating with said tank, a compartmentin the bottom of said housing, a plurality of flues extending throughsaid water jacket each having one end communicating with the inside ofsaid second chamber, and their other end communicating with the insideof the compartment in the bottom of said housing, a plurality of fiuespassing through said water jacket each having one end communicating withthe inside of said compartment in the lower end of said housing andtheir other end communicating with the compartment around said tank, andan outlet port in the upper end portion of said housing having one endcommunicating with the compartment around said tank and its other endcommunicating with the outside atmosphere.

6. In a device of the class described, a housing, a compartment in thebottom of said housing, a compartment in the top of said housing, acombustion chamber between said compartments, an independent detachabletank in the compartment in the top of said housing and above saidcombustion chamber, an entrance passageway in said housing having oneend communicating with the inside of said combustion chamber and itsother end communicating with the outside atmosphere, a door forinclosing said passageway, a water jacket around the sides and bottom ofsaid combustion chamber and around said passageway, pipes leading fromsaid tank to said water jacket, vertical flues in said water jacket eachhaving its upper end comunicating with the inside of said combustionchamber and its lower end communicating with the compartment in thebottom of said housing, a plurality of fiues passing through said waterjacket having their lower ends communicating with the compartment in thelower end of the housing and their upper ends communicating with thecompartment in the upper end of said housing, and an outlet portcommunicating with the inside of the compartment in the upper endportion of said housing.

7. In a device of the class described, a housing, a combustion chamberin said housing, an independent detachable tank closing the top of saidcombustion chamber having its entire sides and top spaced apart from theinner side of said housing, a compartment in the bottom of said housingand covering its entire bottom area, a water jacket embracing the entirebottom and sides of said combustion chamber, flues in said water jacket,each having one end communicating with the inside of said combustionchamber and their other end communicating with the bottom compartment inthe bottom of said housing, a plurality of fiues passing through saidwater jacket each having one end communi: eating with the compartment inthe lower housing, and their other end communicating with the spacebetween the said tank and said housing, and an outlet port communicatingwith the space between the said tank and said housing; said parts sodesigned and arranged that all of the hot gases from the combustionchamber passes through said fiues.

PAUL DULUTH KILBURY.

